51550256 has 20 divisors (see below), whose sum is σ = 105754392. Its totient is φ = 24258816.

The previous prime is 51550237. The next prime is 51550259. The reversal of 51550256 is 65205515.

It is not an unprimeable number, because it can be changed into a prime (51550259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94490 + ... + 95033.

Almost surely, 2^51550256 is an apocalyptic number.

It is an amenable number.

51550256 is an abundant number, since it is smaller than the sum of its proper divisors (54204136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51550256 is a wasteful number, since it uses less digits than its factorization.

51550256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189548 (or 189542 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 51550256 is about 7179.8506948265. The cubic root of 51550256 is about 372.1719250009.

The spelling of 51550256 in words is "fifty-one million, five hundred fifty thousand, two hundred fifty-six".